CVE-2026-113721

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-113721
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-113721.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-113721
Aliases
Downstream
AZL (1)
CGA (7)
DEBIAN (1)
MINI (1)
UBUNTU (1)
Published
2026-10-20T19:46:28Z
Modified
2026-10-22T10:33:25Z
Severity
  • 4.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
Summary
virtualenv: Generated files can follow existing destination links
Details

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, ViaTemplateActivator._generate() removes an existing output only when Path.exists() is true, allowing a dangling symlink to survive and redirect generated activation content, while PyEnvCfg.write() opens pyvenv.cfg without first replacing an existing symbolic or hard link. Another local account that prepares final entries inside the destination can therefore cause environment creation to create or overwrite files outside the requested tree with constrained virtualenv-generated content and the invoking user's permissions. The destination parent must remain controlled by the environment owner during creation; concurrent parent-directory replacement is a separate concern. This issue is fixed in version 21.14.9.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-59"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113721.json"
}
References

Affected packages

Git / github.com/pypa/virtualenv

Affected ranges

Type
GIT
Repo
https://github.com/pypa/virtualenv
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
e53e30b9c8fbc3f4f502223819449ddc970fbbe8
Fixed
d25f28699eefb1fc34a251e5adf2b5de844c36cd
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "21.14.9"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "d25f28699eefb1fc34a251e5adf2b5de844c36cd"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "21.14.9",
            "range": [
                {
                    "fixed": "e53e30b9c8fbc3f4f502223819449ddc970fbbe8"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

20.*
20.0.0b1
20.0.0b2
20.0.32
20.0.7
20.24.3
20.27.2
20.27.3
20.3.0
20.37.0
20.38.0
20.39.0
20.39.1
21.*
21.0.0
21.1.0
21.10.0
21.11.0
21.11.1
21.12.0
21.12.1
21.13.0
21.14.0
21.14.1
21.14.2
21.14.3
21.14.4
21.14.5
21.14.6
21.14.7
21.14.8
21.2.0
21.2.1
21.2.2
21.2.3
21.2.4
21.3.0
21.3.1
21.3.2
21.3.3
21.4.0
21.4.1
21.4.2
21.4.3
21.5.0
21.5.1
21.5.2
21.6.0
21.6.1
21.7.0
21.7.1
21.7.10
21.7.11
21.7.12
21.7.13
21.7.14
21.7.15
21.7.16
21.7.2
21.7.3
21.7.4
21.7.5
21.7.6
21.7.7
21.7.8
21.7.9
21.8.0
21.8.1
21.9.0
21.9.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-113721.json"